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BGARD. No. 337,310. Patented Mar. 2, v1886.

STATES PATENT OFFICE.

JAMES W. ORABBE, 0F BROOKLYN, NEW YORK.

SIDING AND ROOFING BOARD.

SPECIFICATION forming part of Letters Patent No. 337,310. dated March 2, 1886.

Application led December 21, 1885. Serial No. l86,266. (No model.)

To @ZZ whom t may concern:

Be it known that I, J AMES W. GRABBE, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Siding and Roofing Boards, of which the following is a specification.

My invention relates especially to the forma-V tionvof the joining edges of boards employed for siding, rooting, partitions, or other uses where a tight joint is desired, and has for its object the provision of a form of board wherein the joining edges are so shaped as to effectually prevent the passage or'air or water through thejoints, my present invention being an improvement upon the construction shown and described in Letters Patent No. 318,87 2,grant ed to nie May 26, 1885, foran improvement in roofing and siding boards.

My invention consists, essentially, in a board, the edges whereof are provided with a double rabbet adapted and arranged to engage with other boards having similarlyformed edges, all of which will be hereinafter first fully described, and then pointed out in the Claims.

In the dra\vings,Figure lis a sectional view showing the construction and manner ot' applying my improved boards when used as siding; and Fig. 2 is asectional view of a portion of a root', up-and-down siding, a partition,&c., constructed of boards madein accordance with my invention.

Like letters of reference, wherever they occur, indicate corresponding parts in both the gures.

A is the body of the board,provi led at each edge with right-angle face a, face a', incline a2, incline a3, and incline at.

The inclines in the upper rabbet may be slightly varied from the lower, if desired.

Vhen the material is to be employed as siding or longitudinal roofing, the rabbets are cut in opposite sides of the board, as indicated in Fig. l; but where the material is to be eniployed as vertical rooting, partitions, 85e., the rabbets are both cut in the same side of the board,ras indicated in Fig. 2, and the faces a2 and a* may be at right angles to the surface of the board.

It will be seen that by employing the double rabbet having` such inclines as c2 and a4, I prevent any possibility of air or water being forced between the joints, and the boards may be secured in place by nails E. In shrinking the inward incline is always closed, although the outwardly-inclined faces may spring apart.

Having now fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. A siding or roofing board having a double rabbet formed in each edge adapted and arranged to engage with a corresponding rabbeted board, substantially as shown and described.

2. A roofing or siding board each edge whereof is provided with a face, a, at right angles to the side of the board, face a', parallel with the side of the board, incline a2, extending outward from theface a', incline c3, eXtending inward toward that side of the board in which the rabbet begins, and incline a4, extending outward from the face a, substantially as shown and described.

Signed at New York, inthe county of New York and State of New York.

JAMES w. GEABBE.

Witnesses:

ALEXANDER HARVEY, WALDO MORGAN. 

